Set of modular display units



FIG. 1 is a front elevational view of the set of modular display units showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an end elevational view taken from the right of FIG. 1;

FIG. 4 is an elevational view taken from the left of FIG. 1;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a perspective view thereof. 

The ornamental design for a set of modular display units, as shown and described. 